Incandescent lamp and reflector.



W. R. LITZENBERG.

INGANDESGENT LAMP AND REFLECTOR. APPLIGATIVON FILED MAY 31, 1912.

L75 924L Patented 0ct.14, 1913.

WITNESSES WWW INVENTOR WILLIAM B. LITZENBERG, 9F EORTLANEB, OBEGQN,

Specification of Letters Patent.

Patented @ct. El i,

Application filed May31, 1912. Serial No. 700,842.

To all whom it may concern:

Be it known that 1, WILLIAM R.- Lrrznnnuns, a citizen of the United States, residing in the city of Portland, "county of Multno-- mah, and State of Oregon, have invented certain new and useful Improvements in incandescent Lamps and Reflectors, of which the following is a specification. 7

My invention relates to incandescent lamps and reflectors and more particularly to certain improvements in the construction of an incandescent lamp, whereby a combination shade and reflector can be conveniently and detachably secured thereto and carried thereby, without the use of supporting rods or chains from the ceiling, fixture, or chandelier, which rods, chains, or other supports, cast shadows, and also make difficult the insertion and removal of the lamps into and from their sockets.

My idea is to provide an incandescent electric lamp, for example, at its outer ex tremity, with attaching means whereby a combination shade and reflector can be quickly and conveniently attached directly thereto and supported thereby for the purpose of shading or hiding the lamp, with its glare, from the eyes, and at the same time, reflecting the light therefrom against the ceiling, or the wall, but better still, against an oppositely facing reflector of high lightreflecting e'lliciency, to be reflected or diffused as desired, depending upon the form of reflector used. If the lightbe reflected directly against the bare wall or ceiling, much of it is absorbed and lost. 011 the other hand, by placing the lamp between two opposed reflectors'of proper cooperating forms, and of highlight-reflecting efliciency, all of the light can be reflected and directed, or diflused generally, depending upon the relative shapes of the opposing reflectors, while at the same time the lamp with its glare is shaded, or wholly hidden from view. By constructing an incandescent lamp sothat a reflector can be attached directly "thereto, I avoid the use of hanging chains, rods and other supports for such indirect reflector, and I also avoid the shadows which would be cast thereby. Such a lamp makes it possible, with the use of two proper reflectors, and the ordinary socket, to shade the lamp and reflect all of the light to onelocation, or to diffuse it generally throughout the room, without the use of expensive chandeliers or other unnecessary supporting apparatus. In other words, my invention pro vides a simple, practical and economical means for indirect lighting, which is applicable alike to the ceiling or side wall, with a maximum efiiciency.

The invention will be readily understood from the foregoing, and from the following description of two embodiments thereof, ref-.

erence being had to the accompanying sheet of drawings, illustrating the same, and in which,-

Figure 1 is a side elevation, partiy'in section, illustrating one form of the invention; Fig. 2 is a similar view showing a sligh 1y modified form thereof; and Fig. 3 is a fragmentary inside plan view of the indirect reflector of Fig. 2, showing its means of attachment to the lamp.

Referring now to the drawings, 1 designates my improved incandescent electric lamp, provided with the usual threaded socket 2, and provided at its opposite end with an attaching, or supporting means, for a combination shade and reflector, hereinafter referred to as an indirect reflector. This attaching means is shown as a reduced threaded portion 3, in. Fig. 1, and as a head or knob-like portion 3 in Fig. 2. A shade 4 of high light-reflecting efliciency is provided, and may be supported at the socket end of the lamp in any of the well known ways, whereby to directly reflect the light as desired. An indirect shade and reflector 5 is provided and adapted to be attached to the lamp 1. In Fig. 1, the indirect reflector 5 is provided with a threaded socket 6, adapted to be screwed upon the reduced threaded portion 3 of the lampl; while in Fig. 2, I have shown the indirect reflector 5 provided with a yoke-like member 7, adapted to fit upon the neck like portion of the lamp 1. It is to be understood, of course, that any means for directly attaching the indirect reflector to the lamp may be used, the object being to make possible the attachment of an indirect reflector to an incandes cent electric lamp, whereby to shade or hide the lamp, With its glare, from the eye, and at the same time produce an eflicient indi- 'rect light. For example, my incandescent electric lamp is screwed nto the ordinary socket in the ceiling, or side wall, and one of my indirect reflectors placed thereupon. The

lamp itself is hidden from view while the light therefrom is reflected indirectly against the ceiling or side Wall, as in the in direct lighting devices now used, which are basket-like fixtures within which ordinary incandescent lamps are placed. lit is objectionable, however, to reflect the light against the wall, for the reason that so much of the light is absorbed thereby, and only a small percentage of its efliciency is secured. By placing a direct reflector of the proper form and of high light-reflecting eficiencysimple forms of my invention, llam aware that changes can be made therein withoutdeparting from the spirit thereof and l do not, therefore, limit the invention to the particular forms shown for purposes of illustration, except as the same may be limited by the hereto appended claims.

ima erll claim:

\ 1. An incandescent lamp globe having at its outer extremity and as an integral part thereof a supporting element and a combination shade and indirect;reflector supported thereby at a space therefrom.

2. In combination, an incandescent lamp having at its outer extremity a supporting element made as a art thereof, and a combination shade and indirect reflector detachably supported thereby at a space therefrom.

3. An incandescent lamp having its extremity provided with a threaded portion, 3-5

and a reflector for indirect lighting detachably supported thereby.

Signed at Portland, Oregon, this 24th day of May, 1912.

WILLIAM R. LITZENBERG.

In the presence of-- DANIEL E. Powers,

MARGARETE JAsoHINER. 

